Charging - Overview: Diagnosis MINI Cooper I

Generator Diagnosis

Before beginning any generator diagnosis, ensure that the battery is in good condition and has passed all testing procedures. A weak or defective battery will influence the generator testing.

The generator may be tested using

1. GT1 or DISPlus
2. Carbon Pile Tester

Testing Generator with DISplus

Two modes of testing are available when using GT1 with MIB or DISplus.

1. Testing using Test Plan
2. Testing using Preset Measurement

Testing Generator using Test Plan

Testing the charging system using a test plan is the more complete method of testing.

When selecting this mode of testing, other components in the charging system are tested in addition to the generator.

Test plans available

1. Generator (Checks voltage and current output)
2. Wiring from generator to battery (Performs voltage drop test)
3. Charge indicator lamp (Condition of bulb, wiring and signal to bulb)
4. ON delay and Start ON delay (If applicable)
5. Ground side circuit wiring (Voltage drop test)

Sub-tests may be available with some of the component testing.

There are many advantages to using the test plan.

1. Complete system testing.
2. Functional description of system on screen.
3. Proper wiring diagrams provided during testing.
4. Test instructions and notes.
5. Instructions for proper test set-up.
6. Display of nominal values.
7. Solutions.

Testing Generator using Measurement System

Enter the measurement system and select Preset Measurements.

Instruction on the proper hook-ups required are available through the HELP button, selecting Help using Preset Measurement.

The oscilloscope will display preconfigured for the testing.

Diagnostic information available through oscilloscope.

1. Voltage Graph.
2. Charging Current.
3. Harmonic Content.
4. Rotation Speed (Engine RPM).

Scheme 8